4 PCie slots with the optimal dual-slot layout - only that has it aside from the likes of the P6T6/P6T7 or the Classified 200, which are $400 mobos. Also, in terms of $/PCIe, it's one of the cheapest folding mobos you can get brand new right now.

L3 is not as relevant as you might think for folding (i.e., not at all).